Can't stop Eljer tub faucet from dripping

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BrianL

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Yes, this is long. Trying to give all the info I can up front.

I have a dripping tub faucet that I'm unable to stop. It's an Eljer single handle from 1998 (builder installed).
It's been dripping for awhile, and at first it would drip for a minute then eventually make a strange "bloop, bloop..." sound for a few seconds and stop. I usually had to turn it on and back off (fairly hard) first. Now that doesn't work anymore so it always drips.

I've checked Lowes/Home Depot, but they each only carry parts made by Danco and they offer nothing for Eljer. I used Danco part 80686 "Seats and Springs for Valley" http://www.homedepot.com/p/DANCO-Seats-and-Springs-for-Valley-80686/203194019, which looked identical to mine. I read that Eljer was the manufacture of the Valley brand. But the faucet still drips and is actually worse now, a couple weeks after replacing, than before I replaced them.

Is there something else besides those port seal rings that can make it leak? I did not replace any of the o-rings that go around the cartidge.

Also when I took the cart out, I there was a T-shaped tab on side (top?), but not on the other side (bottom?). Should there be? I'm not referring to the square guide tabs on each side. Also I failed to note the which way the T-tab faced when I took it out (or how many there were). I put it back in with the tab on top. Hope that's correct.

My cart looks very similar to V6005
https://www.plumbingsupply.com/images/valley-v6005-cartridgeassembly.jpg
That picture linked from this page:
https://www.plumbingsupply.com/valleystems.html

It's also on this page:
https://www.plumbingsupply.com/valleybacktoback.html
Linked from this page:
https://www.plumbingsupply.com/valleyfaucets.html

I also want a new bonnet nut, since mine is corroded on the outside.


Lastly, the cart is difficult to get out and back in. I wanted to get some silicone to lube the o-rings that surround the cart, but am confused since you're not supposed to use anything petroleum based, yet this Oatey Silicone Grease has petroleum in it:
https://www.lowes.com/pd/Oatey-Silicone-Grease/50236505
"Petroleum oil-based valve and faucet stem grease"
Is it not enough petroleum percentage to degrade rubber?
Or if I end up ordering from plumbingsupply.com, I could get:
https://www.plumbingsupply.com/images/silicone-lubricant.jpg
from
https://www.plumbingsupply.com/valley.html

tub.jpg
 
Never seen a forum without an edit option.

I also have a dripping Eljer kitchen faucet but I thought it would be best to keep separate threads for them.
 
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